blob: 2e04de81f1d058ec4b05b5ec241ffe20875f84ca (
plain) (
tree)
|
|
package main
import (
"database/sql"
"fmt"
"log"
"os"
"tildegit.org/andinus/grus/lexical"
"tildegit.org/andinus/grus/search"
"tildegit.org/andinus/grus/storage"
)
func grus() {
version := "v0.1.0"
// Early Check: If command was not passed then print usage and
// exit. Later command & service both are checked, this check
// is for version command. If not checked then running grus
// without any args will fail because os.Args[1] will panic
// the program & produce runtime error.
if len(os.Args) == 1 || len(os.Args[1]) == 0 {
printUsage()
os.Exit(0)
}
// Running just `grus` would've paniced the program here if
// length of os.Args was not checked beforehand because there
// would be no os.Args[1].
switch os.Args[1] {
case "version", "v", "-version", "--version", "-v":
fmt.Printf("Grus %s\n", version)
os.Exit(0)
case "help", "-help", "--help", "-h":
printUsage()
os.Exit(0)
case "init", "i":
db := storage.Init()
db.Conn.Close()
os.Exit(0)
}
// Initialize the database connection.
db := storage.InitConn()
defer db.Conn.Close()
word := os.Args[1]
sorted := lexical.Sort(word)
anagrams, err := search.Anagrams(sorted, db)
if err == sql.ErrNoRows {
fmt.Println("Word not found in database.")
return
} else if err != nil {
log.Fatalf("grus: Search failed :: %s", err)
}
for _, w := range anagrams {
fmt.Println(w)
}
}
|